Schaum's Outline of Mathematical Methods for Business and Economics (Schaum's Outlines)
Schaum's Outline of Business Statistics, Fourth Edition
Introductory Econometrics: A Modern Approach
Schaum's Outline of Advanced Calculus, Third Edition (Schaum's Outlines)
Econometrics For Dummies
Mostly Harmless Econometrics: An Empiricist's Companion
Mastering 'Metrics: The Path from Cause to Effect